Valve rod sealing mechanism of valve

The utility model discloses a valve rod sealing mechanism of a valve. The valve rod sealing mechanism comprises a valve body and a valve rod. The valve body is provided with a valve hole for the valve rod to pass through. A sealing mechanism body is arranged between the inner wall of the valve hole and the valve rod. The sealing mechanism body comprises sealing padding installed between the valve rod and the inner wall of the valve hole. The valve rod is sleeved with a padding gland. The padding gland comprises an abutting end extending into the valve hole to abut against the sealing padding. The sealing mechanism body further comprises a friction insulation cover. A notch is formed in the peripheral wall of the friction insulation cover. The friction insulation cover is arranged on the valve rod in a sleeving mode and located between the sealing padding and the valve rod. The two sides of the notch of the friction insulation cover are tightly attached to each other through extrusion of the sealing padding. One end of the friction insulation cover is flush with one end of the sealing padding, and the other end of the friction insulation cover extends into the padding gland and is closely attached to the inner wall of a through hole in the abutting end. The valve rod sealing mechanism has the advantages that the sealing performance is good, the friction resistance between the valve rod and the sealing mechanism body is small, and a valve can be opened or closed conveniently.